Tapinocyba virga, Irfan & Yun & Lu-Yu & Zhi-Sheng, 2024

Irfan, Muhammad, Yun, Dai, Lu-Yu, Wang & Zhi-Sheng, Zhang, 2024, Four new species of Tapinocyba Simon, 1884 (Araneae, Linyphiidae) from Jiangjin District of Chongqing, China, ZooKeys 1219, pp. 195-214 : 195-214

publication ID	https://doi.org/ 10.3897/zookeys.1219.133899
publication LSID	lsid:zoobank.org:pub:40631DBF-34FF-4C81-A6A4-8C940FBA1E69
DOI	https://doi.org/10.5281/zenodo.14269247
persistent identifier	https://treatment.plazi.org/id/9D6B30B0-9F68-5F8E-8DE6-7BAE2D22D869
treatment provided by	ZooKeys by Pensoft
scientific name	Tapinocyba virga
status	sp. nov.

Treatment

Tapinocyba virga sp. nov.

Figs 9 View Figure 9 , 10 View Figure 10 , 11 View Figure 11 , 12 View Figure 12

Type material.

Holotype: China • ♂; Chongqing Municipality, Jiangjin District, Tanghe Town Gunziping Jianshanzi, Dayuandong , 28°55′46.81″N, 106°5′13.45″E, 752 m a. s. l., 2023. III. 5, Wang L. Y. et al. leg.; SWUC -T-LIN-29-01 GoogleMaps . Paratypes: 1 ♂ 3 ♀; same location data as holotype; SWUC -T-LIN-29-02 to SWUC -T-LIN-29-05 GoogleMaps • 1 ♂; Tanghe Town Gunziping Jianshanzi, Dayuandong , 28°55′46.81″N, 106°5′13.45″E, 752 m a. s. l., 2023. III. 25, Wang L. Y. et al. leg.; SWUC -T-LIN-29-06 GoogleMaps • 2 ♂; Baisha Town, Zhang Gongshan, Xiannu Cave , 28°57′10.27″N, 106°8′57.34″E, 809 m a. s. l., 2023. III. 5, Wang L. Y. et al. leg.; SWUC -T-LIN-29-07 & SWUC -T-LIN-29-08 GoogleMaps • 2 ♂; Tanghe Town Gunziping Jianshanzi, Dayuandong , 28°55′46.81″N, 106°5′13.45″E, 752 m a. s. l., 2023. II. 5, Wang L. Y. et al. leg.; SWUC -T-LIN-29-09 & SWUC -T-LIN-29-10 GoogleMaps • 1 ♀; Tanghe Town, Longyuemen, Dayuandong, Gunziping Management Station , 28°55′43.93″N, 106°5′20.81″E, 773 m a. s. l., 2023. II. 5, Wang L. Y. et al. leg.; SWUC -T-LIN-29-11 GoogleMaps .

Etymology.

The specific epithet is derived from the Latin noun virga , meaning “ rod ” and referring to the somewhat rod-like dorsal tibial apophysis of the male palp.

Diagnosis.

The male of Tapinocyba virga sp. nov. resembles T. praecox (O. Pickard-Cambridge, 1873) in having the similar embolic division (Figs 9 A – D View Figure 9 , 10 A – C View Figure 10 ; Hormiga 2000: fig. 27 A – E, pl. 62 A – F) and can be distinguished by the ocular region modified in T. virga sp. nov. (Fig. 11 B View Figure 11 ; vs not modified); tibia with three apophyses (DTA, PTA and RTA) in T. virga sp. nov. (Fig. 9 A, B, D View Figure 9 ; vs tibia with one apophysis); anterior radical apophysis present in T. virga sp. nov. (Figs 10 A, C View Figure 10 ; vs absent); and embolus as long as radix with bifurcated tip in T. virga sp. nov. (Figs 9 A View Figure 9 , 10 A View Figure 10 ; vs much shorter than radix with pointed tip). The female of T. virga sp. nov. resembles T. triangularis sp. nov. in having the similar ventral and dorsal plate (Fig. 10 D – H View Figure 10 ; Fig. 7 D – H View Figure 7 ) and can be distinguished by the spermathecae oval in T. virga sp. nov. (Fig. 10 G, H View Figure 10 ; vs globular); copulatory opening longer than wide in T. virga sp. nov. (Fig. 10 D View Figure 10 vs as long as wide).

Description.

Male (holotype, Fig. 11 A – C View Figure 11 ): total length 1.69; carapace 0.79 long, 0.59 wide, brown, cephalic region slightly elevated, cephalic pits absent, fovea, cervical and radial grooves distinct. Clypeus 0.20 high. Chelicerae with six promarginal and five retromarginal teeth. Sternum yellowish brown longer than wide, shield-like with microsetae. Ocular region strongly curved, extending above clypeus, eyes: AER recurved, PER procurved, slightly wider than AER. Eye sizes and interdistances: AME 0.03, ALE 0.04, PME 0.06, PLE 0.05, AME – AME 0.03, PME – PME 0.07, AME – ALE, 0.01, PME – PLE 0.02, AME – PME 0.07, ALE – ALE 0.19, PLE – PLE 0.21, ALE – PLE contiguous. Length of legs: I 1.88 (0.55, 0.21, 0.46, 0.39, 0.27), II 1.73 (0.52, 0.19, 0.41, 0.33, 0.28), III 1.44 (0.41, 0.17, 0.31, 0.30, 0.25), IV 2.51 (0.56, 0.20, 0.48, 0.36, 0.29). TmI 0.54 and TmIV absent. Tibial spine formula: 1-1 - 1 - 1. Opisthosoma 0.96 long, 0.66 wide, oval, greenish.

Palp (holotype, Fig. 9 A – D, a View Figure 9 paratype SWUC -T-LIN-29-02 , Fig. 10 A – C View Figure 10 ). Femur unmodified, almost as long as both patella and tibia. Patella longer than tibia. Tibia widest at distal end, with one retrolateral and one dorsal trichobothria, with two apophyses; dorsal tibial apophysis rod-like, two-third length of tibia; prolateral tibial apophysis (PTA) thumb-shaped with tapering tip in dorsal view; retrolateral tibial apophysis D-shaped; paracymbium J-shaped, basally with setae, distal arm tip hook-shaped with blunt end; tegulum almost round, ventrally bulging above the subtegulum, protegulum distinct, membranous; suprategulum small, with distinct median suprategular apophysis, distal suprategular apophysis membranous; embolic division simple, consisting of a radix longer than wide; tailpiece slightly curved with blunt tip; anterior radical process one-third the length of embolus, with blunt tip; median membrane short, present in between embolus and distal suprategular apophysis; embolus almost as long as radix, with bifurcated tip.

Female (paratype SWUC -T-LIN-29-03 , Fig. 11 D, E View Figure 11 ): total length 1.86; carapace 0.91 long, 0.62 wide, cephalic region slightly elevated, brown, fovea, cervical and radial grooves distinct. Clypeus 0.10 high. Chelicerae with six promarginal and five retromarginal teeth. Sternum shield-shaped, longer than wide, yellowish brown with microsetae. Eyes: AER recurved, PER slightly procurved, slightly wider than AER. Eye sizes and interdistances: AME 0.03, ALE 0.06, PME 0.06, PLE 0.05, AME – AME 0.03, PME – PME 0.06, AME – ALE, 0.02, PME – PLE 0.02, AME – PME 0.05, ALE – ALE 0.26, PLE – PLE 0.28, ALE – PLE 0.01. Length of legs: I 2.1 (0.57, 0.22, 0.51, 0.43, 0.37), II 1.99 (0.60, 0.23, 0.45, 0.38, 0.33), III 1.67 (0.52, 0.18, 0.36, 0.35, 0.26), IV 2.22 (0.66, 0.19, 0.55, 0.46, 0.33). TmI 0.50 and TmIV absent. Tibial spine formula: 1-1 - 1 - 1. Opisthosoma 1.10 long, 0.75 wide, oval, greenish, dorsally with a pair of sigillae, ventral side greenish black.

Epigyne (Fig. 10 D – H View Figure 10 ). Epigynal plate two times wider than long; ventral plate tapering ventrally, posteriorly with round hole followed by sclerotized ventral pit on its frontal face; dorsal plate almost rectangular, longer than wide; copulatory opening located posteriorly at the base of dorsal plate; copulatory ducts large, curving into two loops; spermathecae located dorsolaterally, spaced by three diameters; fertilization ducts large and sinuous.

Distribution.

Known only from the type locality (Fig. 12 View Figure 12 ).

Habitat.

The specimens of the species described here were collected from leaf litter in broad-leaved and coniferous forests.